7.4 v 5000 mah venom lipo verse 7.2v 4200mah tenergy.

[toolmakerman48]

hi i just bought a rustler vxl off ebay and it comes with the venom pro charger and a venom 7.4 v lipo 5000 mah. i currently own a couple 7.2v 4200mah tenergy batterys and i was wondering if there will be a diffrence in speed between the two. i always thought that volts determines speed and mah just determines run time. i already assume the lipo will have better run time but is .2 volts going to be a noticible diffrence in speed? thanks alot\

this is the car i bought

 

[MotoGod]

LIPO vs NiMh is hardly a comparison. Fully charged the batteries differ in voltage by just .2 volts, but NiMH voltage drops off pretty steadily until the battery is drained. So when it stops moving....your battery may be at 6V or lower or so. LIPO retains a pretty flat line as it drains. So you will be getting 7V+ pretty much the entire duration of the battery life.

So in a nutshell...with both batteries fully charged you will notice a slight increase in speed, and a pretty good jump on "snap" since LIPO delivers it's power faster than NiMH does. If you were to compare 2 half charged packs....the LIPO would be a HUGE difference.

LIPO is also a lot lighter than NIMH so that makes a difference as well. Since I went LIPO...I can't go back....not even for practice packs. I use my NIMH in my son's car...and my bump box now. lol

 

[frickenjoey]

Should be a huge difference.The Lipo should have a much greater output amperage wise. It is not so much the voltage but also the amperage the battery can put out that makes the difference. You can make a 14.4 volt pack out of AA batteries and the 7.4 volt Lipo will spank its ass because it has more juice to put out. Another example. A battery in your car is a 12 volt lead acid battery. So if I take a 14.4 volt Dewalt battery from my drill I still will not be able to start my car with it.....the voltage is there but not the amperage. Just to make an analogy think of electricity as water. Voltage could be the speed of the water and the amperage is the volume of water. Lets say you get hit with a stream of water that is the size of a pencil and traveling at 50 mph....it is not going to knock you over. But lets hit you with 100 gallons of water but it's only traveling at 10 MPH....you are going to go for a ride. The amount of flow of electricity is where you get your power from. All about amps.....voltage help but with out the flow....all pointless.

 

[toolmakerman48]

ok thanks alot. and i have heard once u go black you never go back... wait thats the wrong one, once you go lipo you never go back. and everyone says theres a day and night diffrence so i may just sell all my nimh's on ebay and buy a venom 11v lipo and make this thing go the 70 mph or whatever it goes

 

[frickenjoey]

I never believed it either until I saw the difference myself.

 

[bigjay]

11v may be a bad idea.

 

[MotoGod]

The difference is noticeable in my Spec Slash, but it's not a HUGE difference. The big difference is it's faster for longer, and has a little more punch to it. My main reasons for loving LIPO is the HUGE run times I get with it, and the tiny bit of added punch. Everything else is gravy.

Now if you run a big LIPO....then yeah the difference is night and day.

 

[toolmakerman48]

why would 11v be a bad idea? i am have paddle tires and a mostly sand track... can't be that bad of an idea. more power=better rite?

 

[frickenjoey]

It should be able to take the 3s no problems.....but it will make it really tough to handle. But if you like that.....all good. It can be fun.

 

[hamz9561]

The 11.1v LiPos tend to tear up drive train parts. I blew out two diffs and twisted a CVD on my RC18t. It was fun while it lasted, but that was too short and too expensive. I would recommend just staying with the a big 7.4 volt (5000 mAh) batteries. The run times would be great.

 

[toolmakerman48]

well ill see how fast it is. if its fast enough ill just stick with 7.4 v lipos but if not I'm going to buy 11 v ones